Gasket coating containing chemically exfoliated vermiculite
US7135519B2 · kind B2 · utility
4Cited by
8References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 18, 2003 |
| Grant date | Nov 14, 2006 |
| Priority date | — |
| Expiry date | Apr 26, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/215
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A sealing-enhancing coating for a gasket or a portion of a gasket includes flaky particles of chemically exfoliated vermiculite, at least 90% by weight of the particles having a thickness of no more than 30 microns, and no dimension greater than 1 mm. The particles form 10 to 90 wt. % of the coating. The coating also includes 50 to 10 wt. % of an organic polymer binder which when formed into a film 1 mm or less in thickness and heated to 300° C. in free air for 24 hours either does not decompose or decomposes leaving a residue of at least 20% by weight of film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.